The Arizona-Sonora Desert Museum has a digital library containing thousands of photographs of plants and animals. The digital library is an interactive site that has a kidâs page with videos, animal sounds, and games.
The photo is courtesy of: http://members.multimania.nl/onager/ballista.htmlMangonelThe Mangonel is what many people think of when they think of a catapult. From the Latin word manganon meaning engine of war. The Mangonel was invented by the Romans in 400 BC. The Mangonel consists of a long wood arm with a bucket (early models used a sling) with a rope attached to the end. The arm is then pulled back (from natural 90o angle) then energy was stored in the tension of the rope and the arm. Then the bucket would be loaded.
It was usually quite difficult for an enemy to capture a castle, and for that, an attacking army needed siege engines. One of the most important and efficient siege engines was the catapult. The Roman Onager . The catapult was a weapon used since ancient times. In its most basic form, the catapult may be described as a âone-armed stone throwerâ. In the Roman world, a catapult-like siege engine known as the âonagerâ (meaning âwild assâ) was used when the Romans were besieging an enemy.